of the Fishery Board for Scotland. 127 
of minute spines; the second joint bears a feathered seta interiorly, and a 
few small hairs on the exterior edge ; while the end joint, besides being 
furnished with a few minute spines on the outer margin, bears also a short 
but moderately stout terminal claw and two slender hairs—the one very 
short and the other about twice the length of the claw. The outer 
branches, which are shorter than the first joint of the inner ones, are com- 
posed of three sub-equal joints, the first and second are each armed with 
a strong dagger-like spine on the outer distal angle, and the second bears 
also a moderately long seta on its inner distal angle; the end joint is 
furnished with four spines on the outer margin and apex, but two of the 
marginal spines are comparatively small, a slender and slightly bent seta 
also springs from the inner apical angle, as shown in the drawing 
fig. 13), 
The second, third, and fourth pairs have both branches three-jointed, 
the inner being shorter than the elongated outer branches. The structure 
and armature of the second and third pairs are not unlike those of the 
same appendages in J. strémii. In the fourth pair the inner branches 
scarcely reach beyond the end of the second joints of the outer branches, 
the first and second joints are each provided with one seta near the distal 
end of the inner margin, while the third joint bears two marginal and two 
apical sete ; a small slender spine also springs from near the end of the 
outer margin. In the second and third pairs of feet the second joint of 
the inner branches is furnished with two sete on its inner aspect, while the 
end joint of the second pair carries one marginal and two terminal sete, 
and a small and slender terminal spine; but the same joint of the third 
pair has five marginal and apical sete in addition to the small apical 
spine. The outer branches of the fourth pair do not differ much in 
structure and armature from the outer branches of the second and third 
pairs ; the first and second joints are each provided with a spine on the 
outer and a plumose seta on the inner distal angles ; the third joint bears 
two small spines on the outer margin and another on the outer angle of 
the apex, besides sete on the inner margin and apex, as shown by the 
drawing (fig. 14). 
The fifth pair, which are lamelliform, have the inner produced portion 
of the basal joint broadly sub-cylindrical, with the apex obliquely truncate 
and armed with five set, the two inner setz are stout and spiniform, 
but the other three are more slender; the two outer sete are close 
together, but the others are more widely separated ; the secondary joint is 
also broadly sub-cylindrical, scarcely one and a half times longer than 
broad and obliquely truncate at the end; the three outermost are sub- 
equal, moderately short and stout ; the next two are slender, one being 
more elongated than the others, while the innermost seta springs from a 
sub-marginal notch, as shown by the drawing (fig. 15). 
The furcal joints are very short, and the principal tail sets are some- 
what dilated at the base. This species carries two ovisacs, as shown 
in the drawing (fig. 16). 
Habitat.—Granton, Firth of Forth (1894). Fishery Board’s Hatchery 
at Bay of Nigg, Aberdeen, November 23rd, 1900. 
Remarks.—I was at first inclined to ascribe this form to Claus’s 
Dactylopus longirostris, but it differs rather markedly in the structure of 
the fifth feet of the female. Dactylopus tenuiremis, G. S. Brady, also 
resembles the form just described in its elongated antennules and in one 
or two other minor details, but it distinctly differs in the proportional 
lengths of the joints of the outer branches of the first feet and in form of 
the fifth pair; and I do not know of any other species with which it can 
be ‘dentified. 
